baber/WOPTO huggingface dataset:
Patent GB-1060991-A (GB)
Title: Improvements in or relating to phase shifting circuits
Inventor: ANDERSON NORMAN JOHN
IPC: H03H7/18
Filed: 1964-02-18
Abstract: 1,060,991. Impedance networks. NORTH ATLANTIC INDUSTRIES Inc. Feb. 18, 1964, No. 6753/64. Heading H3U. A 90-degree phase-shift circuit giving substantially constant attenuation and relatively slowly varying phase-shift over an operative frequency band comprises phase-lead and phase-lag networks 2 and 3 excited in antiphase from an A.C. source 1 and combining means, shown as an adding network 4, to which the outputs of the networks 2 and 3 are applied to deliver a resultant equal to the mean of the outputs, and the networks being chosen to have equal attenuations and produce equal phase changes of opposite sign at the centre frequency of the said frequency band. Networks 2 and 3 may comprise simple resistancecapacitance networks, Figs. 2 and 3 (not shown) respectively, but Fig. 5 shows a preferred form of circuit in which the phase-lag network is composed of two sections R 3 , C 3 , R 4  and R 5 , C 4 , R 6  while the phase-lead network is composed of sections R 7 , C 5 , R 8  and R 9 , C 6 , R 10 . Curves 9 and 10, Fig. 6, show the response curves for the two halves of the circuit, curve 10 being drawn in the third quadrant to indicate excitation in antiphase. The centre frequency w 0  is chosen to correspond to points 12, 13 at which the tangents to the curves are perpendicular to the axis of the exciting voltage e. The mean of the outputs e 1 , e 2 , taken from output point 11 is then in quadrature with the input e and it can be seen that there is little change in amplitude and phase of the output as the operative points move in opposite directions round their respective curves 9 and 10 as the frequency is altered. In Fig. 8 (not shown), the R-C branches C 3  R 4  and C 5  R 7  of Fig. 5 are each replaced by a single capacitor; as a result the curves of Fig. 5 are modified slightly with the result that the amplitude of the output remains substantially constant over the operative frequency band but the phase changes slightly. Fig. 10 shows a network having a similar response to that of Fig. 8 (not shown), but in this the phase-lag and phase-lead networks are partly combined, resistance Ra and the shunt branches Rx Cx, Ry Cy functioning as the phase lag network and the capacitance Cb and the same shunt branches functioning as the phase-lead network. The values are chosen so that Rx, Cy=Ry, Cx=Ra, Cb=<SP>1</SP>|w 0 .
Patent GB-800883-A (GB)
Title: Apparatus for the preparation of a seam exposed at a coal mine face for blasting and for the blasting of coal from said face
Inventor: DAVIDSON SAMUEL HENRY
IPC: E21C37/14
Filed: 1956-03-05
Abstract: 800,883. Blasting apparatus. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 26, 1956 [March 5, 1956], No. 6804/56. Class 68(1) An armoured vehicle for use in blasting operations comprises a self - propelled chassis 1 carrying an armoured cabin 2, 3, 4, 5, 14 in which is a vertically adjustable mounting 19 carrying a universal mount 22 in which is so slidably supported a rotary drill 24 and a compressed gas blasting device 28, 25. 29 that either the drill or the blasting device may alternately be projected outwardly through a slot in the wall 4 to bore a hole or cause disintegration of the mineral by an operator within the cabin. The blasting device allows the escape of gas under pressure into the face through venting nozzle 28 and may be such as described in Specifications 431,935, 724,060, 737,641, 745,160 and 758,563 which are referred to.
Patent GB-1011267-A (GB)
Title: Chair with double pivot spring assembly
IPC: A47C3/026
Filed: 1963-02-20
Abstract: 1,011,267. Adjustable back-rests. C. W. CHANCELLOR. Feb. 20, 1963 [Feb. 21, 1962], No. 6814/63. Headings A4J and A4U. An auxiliary back-rest 42 of a chair, which is located in an opening or recess 44 of a main back-rest 26, is vertically adjustable in the opening or recess 44 and is pivotally mounted about a transverse axis. The chair also includes adjustable biasing means urging the auxiliary backrest to pivot to a foremost position, and adjusting means to alter this foremost position. The lower end of a support arm 48 which carries the auxiliary back-rest 42 is mounted for vertical adjustment on a mounting plate 96 by means of a bolt 100 extending through the arm 48 and a slot in the plate 96, the arm 48 also has a pair of ribs interlocking with corresponding grooves on the plate 96. A U-shaped support 106, which is pivotally secured to rails 50, 52 attached to the seat 24, is connected to the plate 96 by rivets 108 and by a turnbuckle assembly 112. By adjusting the turnbuckle assembly 112 the angular position of the back-rest may be varied. The adjustable biasing means comprises a compression spring 138 acting between the U-shaped support 106 and an adjustable handwheel 142 in screw-threaded engagement with a rod 128 which extends through the spring 138 and is attached to a plate 134 extending between the rails 50, 52. The chair described is a vertically adjustable swivel chair which can also pivot about a transverse pivot pin 76. Two springs 94 are connected to the chair frame to resist rearward pivotal movement and by rotating a handwheel 88 the compression on the springs can be varied.
Patent GB-1182769-A (GB)
Title: Improvements in or relating to Pipe Couplings
Inventor: GLOVER JOHN BENJAMIN
IPC: F16L47/10
Filed: 1969-02-07
Abstract: 1,182,769. Pipe joints. HEPWORTH IRON CO. Ltd. 7 Feb., 1969. No. 6837/69. Heading F2G. A pipe coupling socket member comprises a resilient plastics socket 1 having an integral external peripheral projection 2 adjacent its mouth, a resilient sealing ring 6 having a sealing head 7 inside the socket and an annular flange 8 abutting the rim 5 of the socket, the head being connected to the flange by a neck portion 9 having a radial thickness less than the axial and radial thicknesses of the flange, and a locking ring 10 of resilient channel section plastics having an annular base 12 abutting the sealing ring flange, with the inner side 11 of the locking ring lying against the inner side of the sealing ring flange and having an axial depth not greater than the axial depth of the flange, and with the outer side 13 of the locking ring having an integral projection 14 engaging behind the projection 2 of the socket. The socket may be at one end of a double-ended socket sleeve adapted to receive plain-ended plastics or clayware pipes, on the end of plastics pipe, or on the end of a sleeve which is a force-fit or secured by adhesive to one end of a plastics or clayware pipe. The locking ring and socket projections may be rounded or bevelled as shown at 15 and 4 to permit a snap-fastening of the locking ring to the socket. For joining plastics pipes, the sealing head 7 is substantially circular. For joining clayware pipes, the head is connected to the neck by an intermediate portion 16, Fig. 2 (not shown), spaced from the socket wall at 19 to accommodate compression of the head. In a further modification, Fig. 3 (not shown), the locking ring and socket projections 2 and 14 are constituted by inter-engaging screw threads, and the sealing head 7 is of elongated nozzle-like form. The arrangement is said to permit the locking ring and socket to be injection-mouldings and to prevent the sealing ring from being dislodged from the socket. The socket and locking ring may be of modified or unmodified polyvinyl chloride, polycarbonate, polyacetal, acrylonitrile butadiene styrene, or polypropylene and the sealing ring may be of natural or synthetic rubber, e.g. butyl rubber.
Patent GB-1062294-A (GB)
Title: Improvements in or relating to distillation of water
Inventor: GLUECKAUF EUGEN
IPC: B01D3/06
Filed: 1965-02-17
Abstract: 1,062,294. Desalination of water. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 10, 1966 [Feb. 17, 1965], No. 6877/65. Heading B1B. An aqueous solution containing dissolved calcium sulphate, e.g. sea-water, is desalinated by heating it, under pressure if necessary, to a temperature at which the calcium sulphate content of the solution exceeds the solubility of anhydrous calcium sulphate and is less than the solubility of the hemihydrate (2CaSO 4 .H 2 O), removing some of the calcium sulphate from the hot solution by passing it through a bed of anhydrous calcium sulphate, and then submitting the solution to distillation. As shown, sea-water is preheated to 160‹C. by passing it through conduit 5 which acts as the condenser of flash evaporator 8. The water is then heated by element 6 to 165‹C., and is passed through anhydrite bed 4. The water is next conducted to evaporator 8 in which some water distils off, the distillate being removed through conduit 15. The remaining solution passes through conduit 9 into the recycle conduit 12 of a further flash evaporator 10. The solution is then heated to 165‹C. by element 13 and is introduced into evaporator 10 where further distillation takes place, the vapours being condensed on the outside of conduit 12, and the distillate being withdrawn through conduit 16. Part of the concentrated solution is discharged to waste through conduit 14, and the remainder is recycled to evaporator 10 through conduits 11, 12. If calcium carbonate is present in the original solution, it should be slightly acidified, e.g. with hydrochloric acid, before heating.
Patent GB-867196-A (GB)
Title: Improvements in or relating to the production of anhydrous barium chloride
Inventor: PITTS FRANK
IPC: C01F11/28
Filed: 1959-02-27
Abstract: Anhydrous barium chloride, or compositions containing anhydrous barium chloride together with at least one alkali-metal or alkaline earth metal chloride (including magnesium), may be prepared by passing gaseous chloride through a solution or suspension of barytes in a melt consisting of at least one alkali metal or alkaline earth metal chloride in the presence of a carbonaceous substance, for example powdered or massive carbon, graphite, anthracite or coke.  In examples, the melt may be barium chloride, giving as product pure anhydrous barium chloride, or the melt may be a mixture of barium chloride with potassium chloride or a mixture of magnesium chloride with potassium chloride.
Patent GB-595014-A (GB)
Title: A method of refining mineral oils and similar products
IPC: C10G21/16
Filed: 1945-03-19
Abstract: Mineral oils, shale oils and their fractions are refined by extracting therefrom the hydrocarbons of low hydrogen content with a selective solvent consisting of furane derivatives containing water and a solvent aid for water which is miscible with or soluble in both water and the solvent.  Suitable solvent aids are mono- or polyvalent alcohols such as methyl or ethyl alcohol, glycol and glycerine, aldehydes such as formaldehyde, acetaldehyde and propionaldehyde, ketones such as acetone, methyl ethyl ketone and diethyl ketone, fatty acids and their derivatives such as formic, acetic and acetoacetic acid and esters such as formates and acetates of the aforementioned alcohols.  Suitable selective solvents are furfural, furfuryl alcohol, tetrahydrofurfuryl alcohol or mixtures thereof, with or without liquid propane or other liquefied light hydrocarbons, crotonaldehyde, dichlorethylether, nitrobenzol or aniline.  Water may be added to a mixture of the solvent and solvent aid and the solution or emulsion so obtained mixed with the oil, or the mixture of solvent and solvent aid may be incorporated with the oil before the water is added.  For extraction in a number of steps, the amount of solvent mixture may be added to the extraction system in successively increasing or decreasing amounts.  The temperature of extraction may also be increased step by step.  For countercurrent extraction in a number of steps, part of the extract obtained in the first extraction step may be circulated to a later step.  The raffinate and extract phases are finally distilled at atmospheric or reduced pressure or in the presence of gases, such as steam, nitrogen or gaseous hydrocarbons, for recovery of the solvent and solvent aid.  The extract may be chilled to separate and remove a major portion of the solvent before it undergoes distillation.  The process of the invention is particularly suitable for refining non-paraffinic stocks consisting principally of naphthenic, aromatic and/or unsaturated hydrocarbons, e.g., shale oils, brown coal tar oils or peat tar oils.
Patent GB-551785-A (GB)
Title: Improvements relating to dynamic balancing machines
IPC: G01M1/04
Filed: 1941-05-29
Abstract: 551,785. Testing balance of rotary bodies. BRITISH THOMSON-HOUSTON CO., Ltd. (Tokyo Shibaura Denki Kabushiki Kaisha). May 29, 1941, No. 6900. [Class 106 (ii)] Relates to balancing heads having angularly adjustable weights as in Specifications 142,783, 208,692, [both in Class 106 (ii)], and 401,040 and consists in a rotatable casing containing a plurality of balancing weights supported by arms which project perpendicularly each from one of a corresponding number of rods rotatably mounted around and parallel with the axis of the casing, means operable axially of the head during rotation to rotate the rods oppositely about their axis and a second axially-operated means to rotate the rods about the axis of the casing. The casing 1 is attached to one end of a shaft 2 in which a helical groove 7 is cut. Hollow axles 5, 6 fitting concentrically on the shaft 2 carry at their ends outside the casing handles 3, 4 constructed of the inner and outer races of ball bearings. The axle 5 has pins 8 projecting inwards and outwards through the axle walls engaging at the inner ends the. groove 7 and at the outer ends with grooves 9 cut longitudinally in the inner surface of the axle 6. End plates'10, 11 are supported in ball bearings 12, 13 respectively by an enlarged part 14 of the spindle 2 and by a collar 15 secured to the casing 1, the plates being connected by rods 16. Two rotatable rods 17, 18 are supported on either side of the spindle 2 and axles by the plates 10, 11 and are provided with grooves 19, 20 inclined in opposite directions. The outer axle has coupling pins 21, 22 to engage the grooves and a flange 23 through which the rods 16 pass. The balance weights 24, 25 each comprise a collar 26 and a pair of spindles 27 carrying ball-bearing-like weights. The collars are loose on radial arms 29, 30 projecting from the rods 17, 18 and pressed out by springs 31, 32. When the handwheel 4 and shaft 6 are pulled to the right or pushed to the left, Fig. 1, the shafts 17, 18 rotate in opposite directions to decrease or increase the angle between the arms 29, 30 without varying the bisecting line of the angle. When the shaft 5 is pushed in by using the handwheel 3 both arms are rotated without varying the angle between them, the bisector line being rotated. In use, the balancing head is coupled at 34 with the revolving body the weights being at a convenient angle #. They are rotated about the axle 2 by using handwheel 3 until the vibration is at a minimum. The bisector of angle # gives the position of the balancing weight. By manipulating handwheel 4, the magnitude is found when the vibration is a minimum.
Patent GB-287707-A (GB)
Title: Improvements relating to sliding windows for use on vehicles
IPC: B60J1/04
Filed: 1927-03-12
Abstract: 287,707. Hellstrand, E. A. March 12, 1927. Holders for sliding windows.-Sliding windows for passenger vehicles are mounted in fixed guides 3 having undercut or like sides and are adapted to be held by a movable wedging device 16 which clamps the sash 10 against the sides of the frame. The wedging device 16 may be moved by a nut 19 and threaded end 18 or by an eccentric 27 or cam and a lever 30. In one modification the sash and its guide are made of T-shape, the base of the guide being cut away and replaced by a wedge-shaped plate to cooperate with the clamp. In a second modification the frame and sash are made of sheet metal in box form, Fig. 7, the slidable channels 5 and 6 being engaged against the shoulders 32 by the wedging device. The felt &c. lining 12 is clamped against the panel by the wedging device. The clamping action may be increased by making the sides of the guide to incline at a greater angle than channels 5, 6.
Patent GB-554065-A (GB)
Title: Binder for samples
IPC: G09F5/00
Filed: 1942-05-22
Abstract: 554,065. Loose-leaf binders. EDRUM AKT.- GES., and KNUSEL, H. May 22, 1942, No. 6973. [Class 146 (i)] A device for binding samples of cloth in such a manner as to render their removal by unauthorized persons difficult comprises a pair of U-shaped spring staples 4, which embrace a supporting block 3 and have at their free ends inwardly turned prongs 6, which pierce the samples 11. The staples are covered by a backing 1, the upper edge of which has an inwardly turned part 8, through which the upper prongs pass. The block 3 contains a wedge-shapei recess 9, and the binder is opened by inserting a pin or rod into the recess and forcing it rearwards along the inclined surface, so as to raise the upper limbs of the staples. The prongs 6 may be replaced by mutually engaging tubes and rods.
Patent GB-1035814-A (GB)
Title: Stationery means for recording information
IPC: B42D15/00
Filed: 1962-02-22
Abstract: 1,035,814. Manuscript books. T. M. HORNIK. Feb. 22, 1963 [Feb. 22, 1962], No. 7029/62. Heading B6A. A book wherein addresses and telephone numbers are recorded, has each leaf 1 printed with a number of separate spaces 2 of identical dimensions to receive such information, and a set of replacement slips 6, Fig. 2 (not shown), of dimensions the same as the spaces 2 and having adhesive on the backs is provided for pasting over the spaces 2 when the information thereon is to be obliterated. As shown, the leaf 1, which may be bound or detachably secured with others in a book, has spaces 2 for addresses at 3 and telephone numbers at 4, and coloured or other printed marks 8 for identification and registration purposes. The slips 6 may be in sheet form, readily separable along perforated lines, printed similarly to the spaces 2, and provided with marks 9 corresponding to the marks 8.
Patent GB-1454532-A (GB)
Title: Method of forming a pipe union
IPC: B21K1/14
Filed: 1973-02-13
Abstract: 1454532 Making pipe unions BRYCE BERGER Ltd 28 Jan 1974 [13 Feb 1973] 7113/73 Heading B3A A method of forming a pipe union comprising a body portion 10, a first bore 12 terminating at an end wall within the body portion, and a second bore 13 of smaller diameter than the first bore extending from the wall comprises machining the first and second bores and subsequently pressing the end wall to form a radiused undercut or groove about its periphery. The first bore 12 is provided with a tapered portion 12 and an external screw thread.
Patent GB-106001-A (GB)
Title: Improvements in and connected with Dirigible Airships.
Inventor: LIVERSEDGE ALFRED JOHN
IPC: B64B1/00
Filed: 1916-05-19
Abstract: 106,001. Liversedge, A. J. May 19, 1916. Cars and cabins.-An air-ship, particularly of the rigid type, is provided at the top with a turret serving normally as a platform for guns, searchlights, &c., but constructed in boat or like form or otherwise made buoyant for use in case of a descent at sea. In the form shown, a boat-shaped turret A fitted with floats D, D', D<2> is arranged between longitudinal members B, B' of the airship framing, and is fitted with rails J, J<1> adapted to rest on longitudinal girders E, E<1> connected to radial frame members C, C' and diagonals G, G'. The floats D, D' may be tied to the longitudinals 13, B<1> by ropes or other material adapted to be readily cut to detach the turret. A ladder K affords access to the turret.
Patent GB-501231-A (GB)
Title: A new or improved cutting board for meat and the like
IPC: A47J47/00
Filed: 1938-03-08
Abstract: 501,231. Cutting-boards. PARKES, C. E. March 8, 1938, No. 7174. [Class 28 (ii)] A cutting-board comprises a wpoden base 1 having spikes 2, and a vertically adjustable bridge member 4 having spikes 9. The bridge is slidable on posts 3 and is provided with an operating-handle 10. The posts have spaced holes 6 in which pegs 7 are inserted, either to retain the bridge in a raised inoperative position or to maintain the clamping pressure of the bridge on the meat. The pegs are attached to. the bridge by chains 8.
Patent GB-268538-A (GB)
Title: Improvements in impulse transmitters for automatic telephone systems
IPC: H04M1/32
Filed: 1926-03-15
Abstract: 268,538. Sterling Telephone & Electric Co., Ltd., Blades, N., and Marks, L. V. March 15, 1926. Impulse transmitters.- In an impulse transmitter of the finger-hold type, the dial, which in its forward movement, sets a driver for the contact mechanism, immediately returns to normal, and is locked until the driver also reaches normal. The coaxial dial and contactmechanism shafts carry respectively arms E, G, the ends of which are in line. Normally, the arms are in contact as shown, the driver arm G, which may be slightly longer than the arm E, holding a spring catch M out of action. When the dial is turned, the arms E, G rotate together to set the contact-mechanism. On release, the arm E is spring-returned and is locked by the catch M, until the driver arm G, which returns under governor control, raises the catch as shown. To prevent rebound of the arm E, it is backed by a leaf-spring towards the end of its return motion. A modified locking arrangement comprises a pivoted pawl on the dial arm, which engages a fixed ratchet and which is raised therefrom by a member movable on the driver arm by a cam on the casing.